Gravithin Focuscope - Blue CosmovsSartory Billard SB04-E
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Focuscope - Blue Cosmo

SB04-E
Diameter
40mm
39.5mm
Lug-to-Lug
n/a
46mm
Thickness
11.2mm
10.3mm
lowest
Water Resistance
100m
100m
Power Reserve
42h
68h
highest
MSRP
$579
lowest
$3,609
Movement
Miyota 9039
La Joux-Perret G101
Case
4 specsCrystal & Dial
2 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Gravithin FOCUSCOPE - BLUE COSMO is widely praised for its dynamic, multi-layered meteorite dial, with some owners specifically appreciating the blue lume on the hands and crystal, as well as red accents. The 40mm case size and semi-buried strap are also noted as positive attributes. The Miyota 9039 automatic movement is considered a reliable choice by owners and reviewers, though one source mentions a power reserve of 42 hours and an accuracy range of -10/+30 seconds per day. While most find the value strong due to the meteorite dial and unique case, one owner finds the design somewhat confused. Overall, owners and reviewers rate the Gravithin FOCUSCOPE - BLUE COSMO highly for its attractive meteorite dial and strong value proposition.
Owners widely praise the Sartory Billard SB04-E for its impressive and deep dials, with specific mentions of the 12 Soleil pattern and the Exquisite Blue Guilloché appearing to move like water in the light. Reviewers highlight its sensible 39.5mm size and 100m water resistance, noting the overall composition looks more expensive than its price. One owner points out slightly sharp edges on the caseback and suggests a more domed crystal. The watch utilizes the La Joux-Perret G101 automatic movement with a 68-hour power reserve. Overall, owners and reviewers rate the Sartory Billard SB04-E highly for its unique dial work and value proposition.
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